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Someone call the police because Christina Aguilera just made the steal of the competition!

"The Voice's" new "steal" feature has dominated season three's battle rounds and the fourth night of battles continued the trend, with the diva committing a steal that even her fellow coaches Adam Levine and Blake Shelton thought was "cool."

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Team Blake

Liz Davis and Nicole Johnson are the first singers to battle and Blake decides to have the duo sing "Baggage Claim," his wife Miranda Lambert's hit song. Christina compliments their "strong voices" and says it will be a "tough one" for Blake. Adam calls the duet "great" and says Nicole won the battle. In the end, Blake decides to keep Liz based on "experience." No one steals Nicole.

Team Adam

The Maroon 5 singer decides to pit 17-year-old Alessandra Guercio against fellow 17-year-old Kayla Nevarez because he believes they can connect on Katy Perry's "Wide Awake." After their performance, Blake says, "Damn Adam, this is a sucky one for ya." Christina agrees, but Cee Lo says Alessandra should move forward. Adam admits he was "a bit sad" over Alessandra's lack of confidence and reminds Kayla to be "humble." So who does he keep? Kayla!

28-year-old Michelle Brooks-Thompson and 15-year-old Adanna Duru battled on Beyonc's "Crazy in Love," and though Adam commended the younger performer on her vocals, he advanced Michelle to the knockout round.

Though Alessandra was booted off of Team Adam, Christina decides to steal her as she believes the trained singer deserves the opportunity to prove she has another side to her, comparing it to her own experience on The Mickey Mouse Club. "Let's work on that confidence thing," she tells a crying Alessandra. "That was so cool," Blake says of Christina's steal. Later, Christina pitted duo Beat Frequency against Laura Vivas on Lady Gaga's "Poker Face" and chooses Latin pop singer Laura as the winner.

Team Cee Lo

In a quickie battle, pop singer Ben Taub and soulful artist Mycle Wastman battled each other and the "Forget You" singer decides to keep Mycle.

Country artist Emily Earle and 19-year-old guitarist MacKenzie Bourg are the final performers of the night and they are tackling Owl City's "Good Night." Adam says the energy was "a little uncomfortable," and picks Emily as the winner. Blake compliments MacKenzie's "strong voice," but tells him to stop doing the breaks. He gives the edge to Emily as well; Christina picks Emily as the winner. In the end, Cee Lo decides to keep MacKenzie in the competition.